<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0"
      xj="nihao"
    />
  </head>
  <body>
    <div id="app" vhtml="yahoo">aaoaaaa</div>

    <script>
      let app = document.querySelector("meta:nth-child(2)");
      let attribute = app.attributes;
      attribute;
      //let attriburtes = app.attriburtes;
    </script>
  </body>
</html>
